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首页> 外文会议>PMSE Symposia >Effects of Chemical Structure of Unsaturated Polyester on the Volume Shrinkage Characteristics for Unsaturated Polyester-Montmorillonite Nanocomposites
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Effects of Chemical Structure of Unsaturated Polyester on the Volume Shrinkage Characteristics for Unsaturated Polyester-Montmorillonite Nanocomposites

机译：不饱和聚酯化学结构对不饱和聚酯 - 蒙脱石纳米复合材料体积收缩特性的影响

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摘要

Adding specific thermoplastic polymers as low profile additives (LPA) in the unsaturated polyester resins (UP) can lead to a reduction or even elimination of the polymerization shrinkage during the cure. By employing non-reactive LPA, microvoids can be generated during the cure, which can then compensate for the volume shrinkage. In contrast, by employing reactive LPA, the intrinsic polymerization shrinkage may be reduced, which is due to the reduction in cyclization reaction of UP resin during the cure caused by the favorable intermolecular crosslinking reaction between UP and reactive LPA, In recent years, nanocomposites based on montmorillonite (MMT) and UP have been investigated quite extensively. However, the volume shrinkage for the UP-MMT nanocomposites has seldom been treated. The objective of this work is to investigate the effects of chemical structure of UP resin, and the amount of silane-treated MMT added on the volume shrinkage characteristics for UP-MMT nanocomposites. An integrated approach of static phase characteristics of styrene (St)/UP/MMT system, XRD analysis, reaction kinetics, cured-sample morphology, and property measurements has been adopted.
机译：在不饱和聚酯树脂（UP）中添加特定的热塑性聚合物作为低型材添加剂（LPA）可以导致固化过程中的降低甚至消除聚合收缩。通过采用非反应性LPA，可以在固化期间产生微系体，然后可以补偿体积收缩。相反，通过采用反应性LPA，可以降低内在聚合收缩，这是由于在近年来纳米复合材料的纳米复合材料之间的良好分子间交联反应期间的固化树脂在固化过程中的环化反应的降低在Montmorillonite（MMT）和UP上已经被广泛调查了。然而，UP-MMT纳米复合材料的体积收缩很少被处理。本作作品的目的是研究化学结构的上升树脂的影响，以及添加的上加入UP-MMT纳米复合材料的体积收缩特性的硅烷处理的MMT的量。已经采用了苯乙烯（ST）/上/ MMT系统，XRD分析，反应动力学，固化样式和物业测量的静态相位静态相位特征的综合方法。

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